alternater upgrade, cheapy
Senior Member
Joined: Sep 2002
Posts: 325
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From: SC
hmmm. my 91 alt on my 1st gen doens't drop voltage no matter wut. bassically because a voltage regulator doesn't alow it. if your voltage is dropping when you turn stuff on then its the regulator going bad.
when i turn stuff on my voltage goes up +.1 volts to a 14.9 max. my voltage only drop when my rpms drop below 500rpm.
Carl.
when i turn stuff on my voltage goes up +.1 volts to a 14.9 max. my voltage only drop when my rpms drop below 500rpm.
Carl.
Joined: May 2002
Posts: 5,972
Likes: 37
From: Ottawa, Soviet Canuckistan
Woah, confusing... CarlRx7 | Rx7Carl... Two *completely* different people, but such similar names!
In any case.... Matty, which alt did you use. I noticed the original posting by dankus says that he had to use a "ford dual alt pulley", but doesn't specify which one.
I found a Buick Lesabre with the 3800 engine at the local part yard and really want to pick up the alt, but I want to know what I need to belt it up. The grinding I'm sure I can take care of, it's just the pulley which still confuses me. What did you use? I noticed the one that comes on the LeSabre is huge compared to our belts.
Jon
In any case.... Matty, which alt did you use. I noticed the original posting by dankus says that he had to use a "ford dual alt pulley", but doesn't specify which one.
I found a Buick Lesabre with the 3800 engine at the local part yard and really want to pick up the alt, but I want to know what I need to belt it up. The grinding I'm sure I can take care of, it's just the pulley which still confuses me. What did you use? I noticed the one that comes on the LeSabre is huge compared to our belts.
Jon
Last edited by vipernicus42; Apr 20, 2004 at 05:27 PM.
Boosted 7
Joined: Jan 2003
Posts: 824
Likes: 1
From: Mississauga, Ontario
I believe it was off some ford truck, i just went to the alternator rebuilder, and asked him for a dual V-belt pully, he just dug one up, and zipped it on for me for free. if you bring it to an alt shop, they'll probably charge you 5 bucks max
Joined: May 2002
Posts: 5,972
Likes: 37
From: Ottawa, Soviet Canuckistan
Does it need to be dual? Does the belt go in the outer one?
It sounds like a good swap. How much grinding did you have to do to make it fit?
And why is abbreviation such a long word?
Jon
It sounds like a good swap. How much grinding did you have to do to make it fit?
And why is abbreviation such a long word?
Jon
I just installed the 140amp on mine with no trimming needed. I have one problem though. One if the wires is supposed to go to the cluster for the warning light, but I don't which wire on the back of the gauge cluster it is.
batt on my camera died, a I had to take them with my samsung sports cam. sorry!
batt on my camera died, a I had to take them with my samsung sports cam. sorry!
Last edited by luiml73; Dec 11, 2006 at 10:21 PM.
Another thread on this swap
https://www.rx7club.com/1st-generation-specific-1979-1985-18/105-amp-alternator-swap-how-%96-gm-cs130-504471/
https://www.rx7club.com/1st-generation-specific-1979-1985-18/105-amp-alternator-swap-how-%96-gm-cs130-504471/
thanks, I saw that thread also but I dont have the factory wiring going to the engine. I just need to know which wire/color it is on the back of the cluster so I can run a new one.
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